Improvement in sash-clamp



" @tutti gieten @anni dtjljiw.

BENJAMIN MOORE, OF HART, MICHIGAN.

'Letters Patent No. 102,574, dated May 3, 1870.

The Schedule referred to in these Letter! Patentand making part of the same.

To all whom it may concern:

Be it knownvthat I, BENJAMIN Moons, of Hart, county of Oceana and State of Michigan, have invented certain-new and useful Improvements in Machines for Clamping Window-Sash, preparatory to boring and pinning them, of which the following is a specification;

Nature and Object of the Invention.

The tirst part of my invention relates to the combination of two levers with twocross-pieces, provided with clamps, arranged in such a manner that the depression of one of the levers causes the other 011e 'to draw a movable cross-piece at one end of a frame toward a stationary cross-piece at the opposite end of the frame, the object of the invention being to clamp or compress the sides of a window-sash preparatory to boring and pinning it. l

'lhe second part of mynvention relates to the comhinatonof a clamp and a rectangular plate provided General *Descriptiont The lever a has a mortise, l), in which the wheel c is set. p

The lever a has its fulcrum in the roller (l, which works in the bars e of the frame.

The spring f, fastened to the lever a and the bar g, holds the upper end of the lever a against the bar h.

The perpendicular lever i passes through the mortise b in the lever a.. f

Its upper end is held between the pieccsj, by a bolt or pin oirwhich it works or has its fulcrum.

The cross-piece 7s is stationary, being fastened to the beams l.

The cross-piece an is fastened tothe pieces n, which have the grooves o Yto receive the tongues p on the beams l.

The cross-piece m also has pieces j, between which one end of the upper half of the double connecting rod s is pinned.

One end of the lower half of the connecting-rod s receives the perpendicular' lever t and is pinned to it.

The upper half of the connecting-rod s has notches tto receive the projections u nea'r the upper end of the lower half of the rod.

The projections-u are held in the notchest by the beams l, constitute the frame A.

them in position.

eccentric clamp c, which is fastened near the end of the lower halt' of the connecting-rod s.

The rod s can be lengthened or shortened at pleasure, and the distance between the cross-pieces k and fm, is regulated by it. The cross-pieces k and m have rabbets cut in their inner edges.

The toe bf the clamp q is provided with the ange r, which tit-s the rabbet cut in the cross-piece k or an.,

andthe heel has the thumb-screw af, by which. the

clamp is held in place.

The plate x, provided with studs y, is pivoted near the o nter corner of the clamp q.- Each of the cross-l pieces k and m is provided with two of the clamps.

A perpendicular gauge, w, having a handle fastened near its top, in a position horizontal to the gaugeand parallel with the bar h, has its upper end working in a mortise on the under side of the cross-piece k, and isl fastened to the bar h near the lever a. Y

The uprights l1', bars e, cross-bars g and h, and

Fig. l shows the connecting-rod s shortened, and the lever a depressed and held by the gauge w.

Fig. 2 shows the lever a. in its place against the bar h, and the connecting-rod s"1engthened, causing the erosspiece m to be projected beyond the end of the frame'A.

Operation, of thc Invention.

Adjust the connecting-rod s so as to place lthe crosspieces k and m the vdesired distance apart. Slide the clamps q on the eross-pieces 1t' and m so they will fit the sash, and tighten the thumb-screws a. to hold Place-thc sash upon the machine, permitting| the corners to rest uponl the plates x between the studs y. Depress the lever a with the foot until the sash is compressed etfect-nally, and push the lever a into a notch in the gauge w.

The plates x'being on pivots, the .pressure of the studs y is equal on all sides of the sash, and the studs y hold the sash perfectly square. While held in this manner the sash may he readily bored and pinned.

Claims.

I claim as my invent-ion- 1. The combination of the frame A, levers a and t', spring f, gauge w, connecting-rod s, and eccentric clamp c, cross-pieces k and on, pieces j, and clamps ),'substantially as and for the purposes hereinbefore specified. v

2. The clamp g, provided with the flange lr, and thumb-screw a', in combination with the plate x, provided with the studs i, substantiallyas and for the purpose hereinbefore specilied. l

In testimony that I claim the foregoing improvement in machines for clamping window-sash, a's above described@ have hereunto set my hand and seal this 11th day of February, 1870.

Witnesss'es: BENJAMIN MOORE. [14.. s.]

DAVID BONHAM,

J. O. PIERCE. 

